<?php
/***************************************************************************
                                emailer.php
                             -------------------
    begin                : Sunday Aug. 12, 2001
    copyright            : (C) 2001 The phpBB Group
    email                : support@phpbb.com

    $Id$

***************************************************************************/

/***************************************************************************
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 ***************************************************************************/

//
// The emailer class has support for attaching files, that isn't implemented
// in the 2.0 release but we can probable find some way of using it in a future
// release
//
class emailer
{
	var $tpl_file;
	var $use_smtp;
	var $msg;
	var $mimeOut;
	var $arrPlaceHolders = array();	// an associative array that has the key = placeHolderName and val = placeHolderValue.
	var $subject, $extra_headers, $address;

	function emailer($use_smtp)
	{
		$this->use_smtp = $use_smtp;
		$this->tpl_file = NULL;
		$this->address = NULL;
 		$this->msg = "";
	   $this->mimeOut = "";
	}

	//
	// Resets all the data (address, template file, etc etc to default
	//
	function reset()
	{
		$this->tpl_file = "";
		$this->address = "";
		$this->msg = "";
		$this->memOut = "";
		$this->vars = "";
	}

	//
	// Sets an email address to send to
	//
	function email_address($address)
	{

		$success = true;

		$this->address = '';
		$this->address .= $address;

		return $success;
	}

	//
	// set up subject for mail
	//
	function set_subject($subject)
	{
		$this->subject = $subject;
	}

	//
	// set up extra mail headers
	//
	function extra_headers($headers)
	{
		$this->extra_headers = $headers;
	}

	function use_template($template_file, $template_lang = "")
	{
		global $board_config, $phpbb_root_path;

		if( $template_lang == "" )
		{
			$template_lang = $board_config['default_lang'];
		}

		$template_file = $phpbb_root_path . "language/lang_" . $template_lang . "/email/" . $template_file . ".tpl";
		if( !file_exists($template_file) )
		{
			message_die(GENERAL_ERROR, "Couldn't find template file: $template_file", "", __LINE__, __FILE__);
		}
		else
		{
			$this->tpl_file = $template_file;
			if( !$this->load_msg() )
			{
				message_die(GENERAL_ERROR, "Couldn't load template file: $template_file", "", __LINE__, __FILE__);
			}
		}

		return TRUE;
	}

	//
	// Open the template file and read in the message
	//
	function load_msg()
	{
		if ($this->tpl_file == NULL)
		{
			message_die(GENERAL_ERROR, "No template file set", "", __LINE__, __FILE__);
		}
		else
		{
			if(!($fd = fopen($this->tpl_file, 'r')))
			{
				message_die(GENERAL_ERROR, "fopen failed opening template file", "", __LINE__, __FILE__);
			}
			else
			{
				$this->msg .= fread($fd, filesize($this->tpl_file));
				fclose($fd);
			}
		}
		return TRUE;
	}

	function assign_vars($vars)
	{
		if(empty($this->vars))
		{
			$this->vars = $vars;
		}
		else
		{
			$this->vars .= $vars;
		}
	}

	function parse_email()
	{
		@reset($this->vars);
		while (list($key, $val) = @each($this->vars))
		{
			$$key = $val;
		}

		//$this->mailMsg = ereg_replace("<!!( )*([^>]*)( )*!!>", '$this->arrPlaceHolders['."\\2".']', $this->mailMsg);
		// $this->msg = ereg_replace("{( )*([^>]*)( )*}", '$'."\\2", $this->msg);
		$this->msg = preg_replace('#\{([a-z0-9\-_]*?)\}#is', '$'."\\1", $this->msg);

    	// Escape all quotes, else the eval will fail.
		$this->msg = str_replace ("\"", "\\\"", $this->msg);

		eval("\$this->msg = \"$this->msg\";");

		return TRUE;
	}

	//
	// Send the mail out to the recipients set previously in var $this->address
	//
	function send()
	{
		global $phpEx, $phpbb_root_dir;

		if (isset($phpbb_root_dir))
		{
			// we must be in the admin section.
			$phpbb_root_path = $phpbb_root_dir;
		}
		else
		{
			$phpbb_root_path = "./";
		}

		if ($this->address == NULL)
		{
			message_die(GENERAL_ERROR, "No email address set", "", __LINE__, __FILE__);
		}
		else
		{
			if(!$this->parse_email())
			{
				return FALSE;
			}
			if($this->use_smtp)
			{
				include($phpbb_root_path . "includes/smtp.".$phpEx);
				if(!smtpmail($this->address, $this->subject, $this->msg, $this->extra_headers))
				{
					message_die(GENERAL_ERROR, "Sending via SMTP failed", "", __LINE__, __FILE__);
				}
			}
			else
			{
				@mail($this->address, $this->subject, $this->msg, $this->extra_headers);
			}
		}

		return TRUE;
	}


	//
   // Attach files via MIME.
	//
	function attachFile($filename, $mimetype="application/octet-stream", $szFromAddress, $szFilenameToDisplay)
	{
		$mime_boundary = "--==================_846811060==_";

		$this->mailMsg = "--".$mime_boundary."\nContent-Type: text/plain;\n\tcharset=\"iso-8859-1\"\n\n".$this->mailMsg;

		if ($mime_filename)
		{
			$filename = $mime_filename;
			$encoded = $this->encode_file($filename);
		}

		$fd = fopen($filename, "r");
		$contents = fread($fd, filesize($filename));

		$this->mimeOut = "--" . $mime_boundary . "\n";
		$this->mimeOut .= "Content-Type: " . $mimetype . ";\n\tname=\"$szFilenameToDisplay\"\n";
		$this->mimeOut .= "Content-Transfer-Encoding: quoted-printable\n";
		$this->mimeOut .= "Content-Disposition: attachment;\n\tfilename=\"$szFilenameToDisplay\"\n\n";

		if ($mimetype == "message/rfc822")
		{
			$this->mimeOut .= "From: ".$szFromAddress."\n";
			$this->mimeOut .= "To: ".$this->emailAddress."\n";
			$this->mimeOut .= "Date: ".date("D, d M Y G:i:s ").$this->getTimeZoneInEmailFormat()."\n";
			$this->mimeOut .= "Reply-To:".$szFromAddress."\n";
			$this->mimeOut .= "Subject: ".$this->mailSubject."\n";
			$this->mimeOut .= "X-Mailer: PHP/".phpversion()."\n";
			$this->mimeOut .= "MIME-Version: 1.0\n";
		}

		$this->mimeOut .= $contents."\n";
		$this->mimeOut .= "--" . $mime_boundary . "--" . "\n";

		return $out;
		// added -- to notify email client attachment is done
	}

	function getMimeHeaders($filename, $mime_filename="")
	{
		$mime_boundary = "--==================_846811060==_";

		if ($mime_filename)
		{
			$filename = $mime_filename;
		}

		$out = "MIME-Version: 1.0\n";
		$out .= "Content-Type: multipart/mixed;\n\tboundary=\"$mime_boundary\"\n\n";
		$out .= "This message is in MIME format. Since your mail reader does not understand\n";
		$out .= "this format, some or all of this message may not be legible.";

		return $out;
	}

	//
   // Split string by RFC 2045 semantics (76 chars per line, end with \r\n).
	//
	function myChunkSplit($str)
	{
		$stmp = $str;
		$len = strlen($stmp);
		$out = "";

		while ($len > 0)
		{
			if ($len >= 76)
			{
				$out .= substr($stmp, 0, 76) . "\r\n";
				$stmp = substr($stmp, 76);
				$len = $len - 76;
			}
			else
			{
				$out .= $stmp . "\r\n";
				$stmp = "";
				$len = 0;
			}
		}
		return $out;
	}

	//
   // Split the specified file up into a string and return it
	//
	function encode_file($sourcefile)
	{
		if (is_readable($sourcefile))
		{
			$fd = fopen($sourcefile, "r");
			$contents = fread($fd, filesize($sourcefile));
	      $encoded = $this->myChunkSplit(base64_encode($contents));
	      fclose($fd);
		}

		return $encoded;
	}

} // class emailer

?>